"We're going head to head in the classic drinking game: flip cup," an excited Fallon, 39, told the crowd. "Instead of teams, we'll be doing all the drinking and flipping ourselves… First to chug the beer and flip all the cups over, wins."

The supermodel, 31, revealed: "I mean, I've never played this game before. She then asked the crowd: "Whose bets are on whom?" The audience appeared to favor "Jimmy," who recently played a botched game of beer pong against Diane Keaton.